To use "Dual Channel" you need 2 of the same memory like: Two 512MB DDR Memory. It does not matter what size is the memory, you just need to of the same kind. And thats how you use dual channel
See, thats what I said too!RangerEdge02 said:na, no option. no need for bios unless you want to over clock your ram to make it faster. once you put 2 sticks of the same ram in there it auto does dual ddr 400